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The crankshaft and main bearing
| Fig. 2.8. Crankshaft engine models L8, LF, and L3: 1 - driving gear
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Crankshafts and engine models L8 LF - 5-iron support with 4 counterweights. The crankshaft of the engine model L3 - 5-iron support with 8 counterweights. Pinion drive balancing shaft is mounted on the crankshaft. Normal installation key is not used, torque the crankshaft pulley bolt locks the crankshaft sprocket. When installing the crankshaft sprocket is necessary to use a special tool to install the TDC of the first cylinder (Fig. 2.8).
| Fig. 2.9. An oil passage of the crankshaft 1 - oil passage; 2 - fillet
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Oil line for supplying oil to the main journal of the crankshaft is located on the crankshaft. Cervical and fillet crankshaft journals hardened knurled to improve the load characteristics.
| Fig. 2.10. The upper and lower liners and main bearing: 1 - the cylinder head bolts; 2 - side of the issue; 3 - Intake side; 4 - the front part of the engine; 5 - the angle between the two flaps; 6 - the inlet channel; 7 - the inlet channel
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The upper and lower main bearing shells are made of aluminum alloy. Upper bearing ?��3 - resistant. Upper liners have oil grooves and oil ducts. Mounting protrusions of upper and lower inserts are absent. Before installing the upper and lower main bearing shells you must measure them and set them up so that they are located in the center of the bearing cover (Fig. 2.10).
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